I don't think so - seems more likely that something like OpenSIL would need to talk to the PSP. The difference here [hopefully] is that those interfaces are doc

I don't think so - seems more likely that something like OpenSIL would need to talk to the PSP. The difference here [hopefully] is that those interfaces are documented. edit: ie. from the blog post, on the xSIM part: > "Provides a set of API services that initialize the platform host silicon. Most of the silicon initialization on AMD-based platforms is performed by embedded µControllers prior to x86 reset de-assertion."